Stream Algae Ash-Free Dry Mass

Summary

Abstract: 

As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic sampling program has been undertaken to monitor the abundance and species distribution of algal mats in glacial meltwater streams of the region. This table contains data showing the ash-free dry mass represented by algal type (brown-colored, red-colored, orange-colored, or green-colored algae, filamentous, sand, rock or moss) and incubation type (light, dark, or none) for multiple streams, dates, and replications.

Date Range: 

January 1, 1994 to December 31, 1994
Data Citation
Mcknight, D. 2015. McMurdo Dry Valleys LTER: Stream Algae Ash-Free Dry Mass. Environmental Data Initiative. DOI: 10.6073/pasta/abcf64aa6d05c1999888d87d6df3bde5. Dataset accessed 21 October 2019.
Dataset(s)

Variables (click to expand): 

Dataset code
  • Label:
  • Definition: Code representing stream algae ash-free dry mass dataset
  • Type: Nominal
  • Missing values: None specified
Strmtrnsid
  • Label:
  • Definition: Code representing stream transect
  • Type: Nominal
  • Missing values: None specified
LOCATION
  • Label: Stream name
  • Definition: Area of stream / name of transect where samples are drawn
  • Type: Nominal
  • Missing values: None specified
DATE_TIME
  • Label: Date
  • Definition: Date of sample
  • Type: Date/time
  • Date format: mm/dd/yyyy
  • Missing values: None specified
Algae Type
  • Label:
  • Definition: Type of algae species is associated with (red, brown, green or orange)
  • Type: Nominal
  • Missing values: None specified
Replication #
  • Label:
  • Definition: Replication number of sample
  • Type: Nominal
  • Missing values: None specified
Incubation Type
  • Label:
  • Definition: Environment where incubation occurred (light, dark or not applicable)
  • Type: Nominal
  • Missing values: None specified
Incubation Time (h)
  • Label:
  • Definition: Number of hours spent incubating
  • Type: Physical quantity
  • Unit: hour
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: 0.01
  • Missing values:
    • Null = None given
Area sampled (cm2)
  • Label:
  • Definition: Area from which sample was drawn
  • Type: Physical quantity
  • Unit: squareCentimeters
  • Maximum: 45
  • Minimum: 0.5
  • Precision: 0.01
  • Missing values:
    • Required entry = None given
AFDM (mg/cm2)
  • Label:
  • Definition: Ash-free dry mass
  • Type: Physical quantity
  • Unit: mg/cm2
  • Maximum: Not specified
  • Minimum: 0.01
  • Precision: 0.01
  • Missing values:
    • Required entry = None given
AFDM Comments
  • Label:
  • Definition: Comments regarding ash-free dry mass
  • Type: Nominal
  • Missing values: None specified
File name
  • Label:
  • Definition: Original file name in which this information was submitted
  • Type: Nominal
  • Missing values: None specified

File: 

strmafdm.csv (91.33 KB)

...or query the dataset by variables and dates of interest:

Short name: 

strmafdm.dat

Dataset ID: 

14
People

Principal Investigator(s): 

Contact: